Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales

Chitosan is a biopolymer of wide application due to its characteristics and non-toxicity, presenting antimicrobial, antitumoral and cicatrizing activities. It is currently used as emulsifier, metal’s chelating, edible biofilm and fat reducer. The variation in the deacetylation degree of th...

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Autores principales: Boarin-Alcalde,Ligia, Graciano-Fonseca,Gustavo
Lenguaje:English
Publicado: Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2016
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400003
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spelling oai:scielo:S0718-560X20160004000032016-10-28Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scalesBoarin-Alcalde,LigiaGraciano-Fonseca,Gustavo fish residue chitin chitosan infrared deacetylation chemical processes Chitosan is a biopolymer of wide application due to its characteristics and non-toxicity, presenting antimicrobial, antitumoral and cicatrizing activities. It is currently used as emulsifier, metal’s chelating, edible biofilm and fat reducer. The variation in the deacetylation degree of this polymer gives differentiated functional properties. It is mainly obtained from crustaceans, but fish scales are also a potential source of this product, despite neglected so far. The aim of this study was to develop a method for chitin extraction and deacetylation for chitosan obtaining from Nile tilapia (Oreochromis niloticus) scales. Characterization showed that chitosan was completely purified. The chitin infrared spectrum presented a characteristic larger band in the region of 3,500 cm-1, due to axial stretching vibrations of the OH group been completely purified, which disappeared in the chitin spectrum. However, a new band aroused at 1,640 cm-1 due to the NH2 deformation, which predominated over the band at 1,655 cm-1, associated to the carbonyl (C=O) that tends to decrease, as the degree of deacetylation of chitosan increases. All bands observed were similar to those described in the literature. Although the yields were lower than the averages usually reported for crustaceans, they can be improved to obtain higher yields and deacetylation.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.44 n.4 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400003en10.3856/vol44-issue4-fulltext-3
institution Scielo Chile
collection Scielo Chile
language English
topic fish residue
chitin
chitosan
infrared
deacetylation
chemical processes
spellingShingle fish residue
chitin
chitosan
infrared
deacetylation
chemical processes
Boarin-Alcalde,Ligia
Graciano-Fonseca,Gustavo
Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales
description Chitosan is a biopolymer of wide application due to its characteristics and non-toxicity, presenting antimicrobial, antitumoral and cicatrizing activities. It is currently used as emulsifier, metal’s chelating, edible biofilm and fat reducer. The variation in the deacetylation degree of this polymer gives differentiated functional properties. It is mainly obtained from crustaceans, but fish scales are also a potential source of this product, despite neglected so far. The aim of this study was to develop a method for chitin extraction and deacetylation for chitosan obtaining from Nile tilapia (Oreochromis niloticus) scales. Characterization showed that chitosan was completely purified. The chitin infrared spectrum presented a characteristic larger band in the region of 3,500 cm-1, due to axial stretching vibrations of the OH group been completely purified, which disappeared in the chitin spectrum. However, a new band aroused at 1,640 cm-1 due to the NH2 deformation, which predominated over the band at 1,655 cm-1, associated to the carbonyl (C=O) that tends to decrease, as the degree of deacetylation of chitosan increases. All bands observed were similar to those described in the literature. Although the yields were lower than the averages usually reported for crustaceans, they can be improved to obtain higher yields and deacetylation.
author Boarin-Alcalde,Ligia
Graciano-Fonseca,Gustavo
author_facet Boarin-Alcalde,Ligia
Graciano-Fonseca,Gustavo
author_sort Boarin-Alcalde,Ligia
title Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales
title_short Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales
title_full Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales
title_fullStr Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales
title_full_unstemmed Alkali process for chitin extraction and chitosan production from Nile tilapia (Oreochromis niloticus) scales
title_sort alkali process for chitin extraction and chitosan production from nile tilapia (oreochromis niloticus) scales
publisher Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate 2016
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400003
work_keys_str_mv AT boarinalcaldeligia alkaliprocessforchitinextractionandchitosanproductionfromniletilapiaoreochromisniloticusscales
AT gracianofonsecagustavo alkaliprocessforchitinextractionandchitosanproductionfromniletilapiaoreochromisniloticusscales
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